I have posted lots of tutorials and help areas for using All part of Google Docs Here...
That means you will find information on Docs, Spreadsheets, Presentation, Forms, and Drawing


What are Google Docs?

Watch this short video, "Google Docs in Plain English", for a quick and amusing explanation:










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Documents

Google Documents is an Online word processing application that allows you to store, share, collaborate and publish your documents to the Web.

http://21ctools.wikispaces.com/Google+Documents



Google Docs for Educators..this site provides tons of resources on using Google Docs and ways to use them in with students:
http://www.google.com/educators/p_docs.html









Presentations


Google Presentations is an Online slide show application that allows you to store, share, collaborate and publish your slide shows to the Web. You can also present your slide shows Online and allow your viewers to join in a chat as they follow your slide show.
http://21ctools.wikispaces.com/Google+Presenations


Spreadsheets


Google Spreadsheets is an Online spreadsheet application that allows you to store, share, collaborate and publish your spreadsheets to the Web. Google spreadsheets will perform mathematical functions, graph your data and allow you to collect data via an Online form. There is also a chat feature that allows you to look at data with others and chat about it Online in real time.
http://21ctools.wikispaces.com/Google Spreadsheets